You can see singer Steven Tyler's message above, and Twitter posts from bassist Tom Hamilton, guitarist Brad Whitford and drummer Joey Kramer below. Perry was forced to leave the stage early during a Coney Island, N.Y. concert by the Vampires, who also count Alice Cooper and actor / guitarist Johnny Depp among their ranks.

Police sources told Page Six that Perry was rushed to the hospital after going into cardiac arrest, although the band has yet to confirm the reasons behind his hospitalization. Late last night, Perry's Twitter page confirmed that he was "stable," "with family" and "under the best care."

Earlier today, Cooper confirmed that the Vampires will continue their summer tour, presumably without Perry (although to be clear, the issue of his participation was not addressed.) The band is set to perform tomorrow night (July 12) in Kettering, Ohio.

Aerosmith is next scheduled to perform together in mid-September at the Kaaboo Festival in Del Mar, California, with a 10-date tour of South America set to follow a couple of weeks later.

All five members of Aerosmith have recently been primarily focused on individual projects. While Perry was recording with the Vampires, Tyler was busy making and promoting his first-ever solo album, the country-leaning We're All Somebody from Somewhere, which is slated for release July 15.

Whitford is currently on tour with longtime Ted Nugent singer Derek St. Holmes as half of the re-activated Whitford / St. Holmes in support of their recently released (and very appropriately titled) album Reunion. Hamilton has been playing overseas festivals as part of Thin Lizzy, and Kramer recently wrapped up a week-long stint as a DJ on a Boston classic rock station.